Knitting-machine cylinder.



H. SWINGLEHURST.

KNITTING MACHINE CYLINDER.

Patanted 001;. 2'7, 1914.

SWINCwLEHUFifiT BY HIS ATTORNEY INVENTQR HARRY WW 3 \w properly Yspac'ed saw .krfsor-milled slots for the'reception of [Machine Cy inders, of'which the following. vis a specificati in; a

man swinennnnnsrf or BOSTON, MASSACHUSETTS, sssieivoa T0 sco'r'r a wint ams, moonronn'rnn, or CAMID NEW JERSEY,

raisins.

HITTING-MACHINE CYLINDER.

Specification ofietters Patent.

EN, NEW JERSEY, n conrenarren on Patented @ct. 2'7, 1914i.

Application filed March 27, 1912. Serial No. 686,583.

To aZZ whom itmay concern. 7

Be it 5 known that 1, HARRY SWINQLEe HURST, a. citizen of; the United States, residing in Boston, Massachusetts, havein: vented certain Improvementsin Knitting- My nvention-relates to that type of knitting machine'fneedle cylinders which have inserted strips, projecting from the'periph cry of the cylinder so-as to form walls between which are the grooves for the guidance of the needles, the object of my invention being to so construct such a cylinder asto limit the lateral play of the needles in the grooves.

In the accompanyingdrawing Figure l is a sectional-plan view of part 01:: an ordinary insertedwall: cylinder fer knitting machines illustrating'the' objection thereto which my inventionisintended to overcome. Figs. 2

and 3 arejsimil'ar views illustrating embodiments "ofniyginventiom'and Fig. 4: is a perspective vievstof one of the walls constructed in accordance with-my invention.

All of thelviews ofthe drawing are on an exaggeratedscale, Figs..;1 to? being on a larger scale than Fig.1

In the drawing, -l represents of the needle cylinderwhich has, in its periphery,

v the base portions of the walls which are intended to project from I the .-per i pherynof the cylinder and form he 35 'the knitting needlesw2. -:'.If these walls are tween them the grooves. for the reception of simply-parallel-sidedstrips of steel of uniform thickness, as shown at 3, in Fig.1, the ;needle;;,guiding grooves will, owing to the radialitdisposition of the walls,- be wider at theiroutenends than at their bases and the rneedles -being free to assume an angular position in the groove,

as shown in F1g. 1, will havera tendency to work out of the grooves, and will not. be as effectively supported as if the op V osite sidesof the needle grooves were para lel.

In carrying out 1 construct the walls as shown in Figs. 2 to at, the projecting portion .3 of each wall being beveled on each sideyas shown in 2,

cylinder, the latter my invention, therefore,

v or on one side, as shown in Fig. 3, and being so disposed in respect to a radial line m passing through the center of the needle that the opposite sides of the needle grooves will be parallel 'With said line. Each of the special walls, therefore, is wider at the outer end than 'at the portion where it joins the base which is inserted in the slot of the .retaining its original parallel-sidedform so'that it will fit snugly in the parallel-sided saw kerf or milled slot formed in the cylinder. By this means if "the needle receiving grooves between the walls are of proper width for the needles,

any displacement of .aneedle in its groove is effectually prevented.

. 11 claim:- '1. The combination of a, knitting machine cylinder having parallel-sided. grooves therein with inserted wallsprojecting beyond the peripheryof the cylinder so as to form needle guiding grooves-between them, the base portion of each of these walls being parallel-sided and fitting snugly in the 3 corresponding parallel-sided groove of the cylinder, but the projecting portion of the wall bein of least width where it joins the base but ncreasing in width as it extends outwardly from said base, and being of such conformation from end to end of its needle guiding portion, whereby the intervening needle grooves are parallel-sided throughout the needle receiving portions of. the

same. l

2. An inserted wall for a knitting machine cylinder, said wall having-a parallel- :sided base and a needle guiding portion be yond the base which is of least width where it joins the base and gradually increases in width from the base toward the outer end,

the projecting portion of the wall being of such "conformation throughout the entire needle guiding portion of the same.

In testimony whereof, I have signed my name tothis specification, in the presence of )two subscribing witnesses. v

HARRY SWINGLEHURST.

Witnesses: Ensm FULLERTON, HAMILTON TURNER;

fietiem of thispatcnt'may be obtained for five cents each, by addressing the Wommissioner or? Eateries,

' sfl ingtomi). G. 

